Improvement of margin method

To machine the workpiece shown in Figure 1 on a coordinate boring machine or milling machine, to boring d, how to ensure the margin L for the knives? According to the general method, the mandrel and the block gauge are used to perform the aligning (see Figure 1). This method has a large error, because there is always some jitter on the spindle of the machine tool. When the plug gauge is used, the gap between the spindle of the machine tool and the block gauge of each person

Rock wool Sandwich Panel

Rock Wool Sandwich Panel is a new type of building material which is color steel sheet as the surface layer, rock wool, fire retardant and flame retardant insulation material as the core layer.

Rock wool sandwich panel is suitable for insulation, sound insulation, etc. of industrial equipment, buildings, ships and so on

Advantage of rock wool sandwich panel:

1. Good fire resistance

2. heat insulation and heat preservation:

3. Bright in color

4. Bending and compression resistance, high bearing capacity

5. Flexible installation:

Description of rock wool sandwich panel:

Structure: Top is PPGI steel sheet, Core is rock wool, Bottom is PPGI steel sheet.

Feeding width of steel sheet: Roof is 1200mm, Wall is 1000mm

Effective width: roof and wall both are 950mm

The thickness of steel sheet: 0.3-0.8mm

The thickness of core: 50/75/100/150/200mm

Color: White, blue, red or according to your requirement

Destiny of rock wool:50-150kg

Length: According to customer`s requirement

Usage: Widely used as roof and wall material for Steel Structure warehouse,workshop, poultry house,hangar,car

parking,gym,shelters and so on.

Life time: 15-20years

Packing: Plastic packing and nude in the container or according to your requirement.

Payment term: T/T, L/C, Western Union

Rock Wool Sandwich Panels


1. Are you a factory or trading company?

We are a professional factory.

2. How about the delivery time?

It`s depends on the quantity, usually, it`s 15-20 days after we get your deposit.

3. Can you do OEM?


4. How can you make sure the quality?

Our products will be test before the shipping, and we will show you the test.

Rock Wool Sandwich Panels

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Shijiazhuang Zhouming Steel Building Materials Co., Ltd. ,